Sample tube holder



FIG. 1 is a perspective view of a sample tube holder showing my newdesign;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left end elevational view thereof; and,

FIG. 7 is a right end elevation view thereof.

The ornamental design for a sample tube holder, as shown and described.